Note: You do not need to oil the pot if you are baking on parchment paper. I have tried it without parchment paper, and instead oiled the pot, but found the bottom crust to be too dark/crunchy/oily for my taste. The texture was far superior when only parchment paper was used.
**Also, check to make sure the knob on the lid of your Dutch Oven is safe for use at 450 degrees. If you're not sure, just unscrew the knob during baking. (Metal knobs and handles are fine.There is one specific type of handle from Le Creuset that is not recommended at this high of heat. There is more info available on their website.
Adapted from lecreuset.com